1227165 Tuning Advice

[Bruce Plecan]

----- Original Message -----
From: Bruce & Lisa Wilcox <wilcoxbl at gte.net>
To: <gmecm at efi332.eng.ohio-state.edu>
Sent: Friday, April 23, 1999 11:17 AM
Subject: Re: 1227165 Tuning Advice

On the small chamber AL heads 28-32 WOT Total.  The one with the 28 had a
real strong top end for some reason, and just luved that 28.
6d initial
Cruise 38-44.
Depends on vehicle weight gearing cam etc..
Bruce


> Hi Bruce,
> The chamber size is 58 cc. What is your guess on the required total
> timing???
> Best Regards,
> Bruce (the other one)
> -----Original Message-----
> From: Bruce Plecan <nacelp at bright.net>
> Subject: Re: 1227165 Tuning Advice
> > 1. The heads are Air Flow Research 190's. The overall Compression Ratio
is
> > 10:1.
> What chamber size?.  The smaller the less total timing generally needed.
> > 2. This data represents the first performance baseline.
> > 3. The injector pulse widths are listed below.
> >     1st Gear: 8.5 - 9.6 mS
> >     2nd Gear: 7.8 - 10.0 mS
> >     3rd Gear: 8.5 - 11.0 mS
> Performance as in time to speed, distance to time, etc.
> > 4. What methods can be used to analyze the starting mode knock counts???
> Looking for something that rattles whille cranking.
> If applicable set min MPH for Knock detection to maybe 2 MPH.
> Should erode.
> > 5. The engine is so loud I can not hear the WOT pre-ignition or spark
> knock.
> > Can the knock sensor get false triggers???
> Easily happens, just overtoquing it, at installation can ruin it.
> What compression ratio generates
> > enough noise to create false triggers???
> Not about CR, usually about other things done at the same time, like
> unknowingly installing solid lifters, too much piston clearance, yada
yada.
> > Thanks and Best Regards,
> > Bruce